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    Stage and organic light emitting display device using the same
    72.
    发明授权
    Stage and organic light emitting display device using the same 有权

    公开(公告)号：US11640788B2

    公开(公告)日：2023-05-02

    申请号：US17407412

    申请日：2021-08-20

    Applicant: Samsung Display Co., Ltd.

    Inventor： Seung Kyu Lee ,  Seung Ji Cha ,  Ji Hyun Ka ,  Tae Hoon Kwon ,  Min Ku Lee ,  Jin Tae Jeong

    IPC: G09G3/3225 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3208

    Abstract: A stage including: an output circuit connected to a first node and a second node; an input connected to a third node and a fourth node; and a plurality of signal processors between the output and the input, the plurality of signal processors electrically connecting the first node and the third node and electrically connecting the second node and the fourth node, wherein the input includes: a seventh transistor connected between a first input terminal and the fourth node and having a gate electrode connected to a second input terminal; a plurality of eighth transistors serially connected between the third node and the second input terminal and having gate electrodes connected to the fourth node; and a ninth transistor connected between the third node and a second power source and having a gate electrode connected to the second input terminal.

    Pixel, stage circuit and organic light emitting display device having the pixel and the stage circuit
    74.
    发明授权
    Pixel, stage circuit and organic light emitting display device having the pixel and the stage circuit 有权

    公开(公告)号：US11476315B2

    公开(公告)日：2022-10-18

    申请号：US17179860

    申请日：2021-02-19

    Applicant: Samsung Display Co., Ltd.

    Inventor： Ji Hyun Ka ,  Han Sung Bae ,  Won Kyu Kwak

    IPC: H01L27/32 ,  G09G3/3233 ,  H01L27/12

    Abstract: A pixel includes a pixel circuit and an organic light emitting diode. The pixel circuit has first, second, third, and fourth transistors. The first transistor controls an amount of current flowing from a first driving power supply coupled to a first node to a second driving power supply through the organic light emitting diode. The turns on when a scan signal is supplied to a first scan line. The third transistor turns on when a scan signal is supplied to a second scan line. The fourth transistor turns on when a scan signal is supplied to a third scan line. The first transistor is a p-type Low Temperature Poly-Silicon thin film transistor and the third transistor and the fourth transistor are n-type oxide semiconductor thin film transistors.

    Display device and driving method thereof
    75.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US11373578B2

    公开(公告)日：2022-06-28

    申请号：US16991860

    申请日：2020-08-12

    Applicant: Samsung Display Co., Ltd.

    Inventor： Ji Hyun Ka ,  Ki Myeong Eom ,  Kyong Hwan Oh ,  Hai Jung In

    IPC: G09G3/3266 ,  G09G3/20

    Abstract: A display device includes: a first pixel connected to a first data line and a first scan line; a second pixel connected to the first data line and a second scan line; a first scan driver connected to a first scan start line and the first scan line; and a second scan driver connected to a second scan start line and the second scan line. In a first frame period, the second scan start line is to be suppled with a second scan start signal having a turn-on level, after a first period elapses after a first scan start signal having a turn-on level is supplied to the first scan start line. In a second frame period, a difference between a time at which the first scan start signal having the turn-on level is supplied and a time at which the second scan start signal having the turn-on level is supplied corresponds to a second period. The second period is shorter than the first period.

    Display device
    76.
    发明授权
    Display device 有权

    公开(公告)号：US11257896B2

    公开(公告)日：2022-02-22

    申请号：US16859917

    申请日：2020-04-27

    Applicant: Samsung Display Co., Ltd.

    Inventor： Hyung Jun Park ,  Yang Wan Kim ,  Byung Sun Kim ,  Su Jin Lee ,  Jae Yong Lee ,  Ji Hyun Ka ,  Tae Hoon Kwon ,  Jin Tae Jeong ,  Seung Ji Cha

    IPC: H01L27/32 ,  H01L27/12 ,  G09G3/3266 ,  G09G3/3233 ,  G09G3/3225

    Abstract: A display device is disclosed, and the display device includes a substrate including first to third display regions, the second and the third display regions being spaced from each other, each of the second and third display regions having an area smaller than that of the first display region and being continuous to the first display region, first to third pixels in the first to third display regions, first to third lines connected to the first to third pixels, and a dummy part configured to compensate for a difference between a load value of the first lines and load values of the second and third lines, wherein the second display region includes a first sub-region adjacent to the first display region and a second sub-region spaced from the first display region, and the third display region includes a third sub-region adjacent to the first display region and a fourth sub-region spaced from the first display region.

    DISPLAY DEVICE
    77.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20210343227A1

    公开(公告)日：2021-11-04

    申请号：US17367396

    申请日：2021-07-04

    Applicant: Samsung Display Co., Ltd.

    Inventor： Kyong Hwan Oh ,  Ji Hyun Ka ,  Ki Myeong Eom ,  Hai Jung In ,  Jin Jeon ,  Won Kyu Kwak ,  Hyun Lee ,  Hwan Soo Jang ,  Jin Tae Jeong

    IPC: G09G3/20

    Abstract: A display device includes pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a scan signal to each of the first scan lines at a first frequency to drive the display device at a first driving frequency, and to supply the scan signal to each of the first scan lines at a second frequency to drive the display device at a second driving frequency lower than the first driving frequency; a second scan driver to supply a scan signal to each of the second scan lines at the first frequency to drive the display device at the first driving frequency, and to supply the scan signal to each of the second scan lines at the second frequency to drive the display device at the second driving frequency; an emission driver to supply an emission control signal to each of the emission control lines at the first frequency; and a data driver to supply a data signal to each of the data lines in response to the scan signal supplied to each of the first scan lines.

    Display device and driving method thereof
    80.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US11056046B2

    公开(公告)日：2021-07-06

    申请号：US16684107

    申请日：2019-11-14

    Applicant: Samsung Display Co., Ltd.

    Inventor： Min Ku Lee ,  Ji Hyun Ka ,  Eun Ju Kim ,  Kwang Sae Lee

    IPC: G09G3/32

    Abstract: A display device includes: a data line; a first scan line configured to sequentially receive a first scan pulse and a second scan pulse, each of which has a turn-on level; an emission line configured to sequentially receive a first emission pulse, a second emission pulse, a third emission pulse, and a fourth emission pulse, each of which has a turn-on level; and a pixel configured to receive the data signal according to the first and second scan pulses, the pixel being further configured to emit light based on the received data signal according to the first to fourth emission pulses, wherein the first emission pulse is generated before the first scan pulse, the second emission pulse and the third emission pulse are generated in a period between the first scan pulse and the second scan pulse, and the fourth emission pulse is generated after the second scan pulse.

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